Refrigerator-car-door-operatilira mechanism



UNITED s'rnjrEs-.ATENT oFECE.

JOHN F. ocoNNoR, or emcAoofiLLINoIsviissrsnongofwnrim migliorer, or

CHICAGO,Y

REERIGERATOR-CAR-DOOR-OPERATING MECIIANISM.

Application filed July 21, 1910. l( `Serial* No. 573,Utvq.

1 o au fic/wm it may concern:

Be it knownthat-1,1' J HNF. VCONNOR,

.a citizen of the United States, residing in Chicago, inthe ,countyfofCook and State of Illinois, have invented a new and useful Improvementin RefrigeratorCar-DoQr-Op1 erating Mechanism, of which the following isa specification.

My invention relates to improvements in refrigerator car doors and meansfor .opening and closing same.

In the accompanying drawing forming a part of this,speciication,.Figure1 is a front elevation of apair of lrefrigerator car doors provided,vwith my improved .operating mechanism. Fig. 2 is a detail plan Aview ofthe operating lever showing the A,operating `a 'refrigerator *'carf2,- 2--refrigerator car doors, 3 the linges thereof, 4 the connecting har ofthe two-.part operating shaft 5, 5, 6', 6 the crank arms at thmev upperand lower ends ofthe operating shaft, 7, 7 the keepers secured to theear lframe -ortdthe upper and lower sills offthchdoor-,irame, eachhaving an inner jaw 8 against which the crankarms engage for opening thedoors Yand an outer Jaw 9 for engagement with the crank arms in forcingthe doors closed, 1Q the lrasp lever pivotally secured to theconnectingbar of the operating shaft lgy a pin 11 which passes throughits. jaws' 13 thestaple member of the door .fastenerizfnd 14 theswingingrlatch or lock on the staplememberll.

III Order t0 Cilllojhe inner. and outer jaws or cam acting faces S,lfLof" the -.upper and lower keepers 7 to properly icooperate with thecrank arms 6 ofthe operating 'shaft 5, and thus properly force' thedoors tightly closed and start them in their opening movement, it isvery essential that the crank arms (i at the upper andrlower ends .ofthe operati;-V ing shaft 5 should stand at the same angle tothe axis ofthe' opernting shaftxand great Specification of Letters Patent.

abl A-eac'ii bearing 18 which-is'fsecu'red to one Aofjlth'ef -ltaientenAug. 1,;11916.

difficulty has heretofore'. been experienced 1n t 1e practical operationof refrigerator ear doors where the operating shaft hasvbeen made in thesingle piece,^as an'y irregularity in the forging or other manufacturingop- 55 el-ations is liable to cause the crank arms to stand at differentangles-so that only one of the crank arms will properly engage itsAkeeper. To practically overcome this -diiii` culty, Imake theV operatingshaft in three G0 parts, that 1s to say, of two shaftmembe'rs 5 one Vateach end, and jan 'intermediate con# necting bar'or member wvhichispreferably rectangular in cross section, although-itnriay. be made -ofany-other suithble shape. Each 65 of the shaft members 5 is preferably amah.vv

leable iron casting and provided with a slot to receive the connectingbarof f the shit" .shaft memher,H The shaft 'members 5 at each end ofthe v operatingfsheftare pref'en of the same .form andV construction,and Vhas a round:'portion-JIJO. fitQin the doors 2 of the car.

Byv making the operating. shaft three s parts the cost of vmanufactureis materially reduced since'the sha-ft bars 5f, whicl i"are duplicates,may be made'in aimachineof 8.0

much' smaller size ,than that required,` to make an operating sla'ft'madejin asingle piece. This furtherni rev reduces the-Hoor j spaceoccupied by these' machines. And byv making the shaft in three parts-the same is 85 always .insured-of having th'e"erank arms extendingparallel to each other and-in alinement. i

v 1 claYirn--r--VY -f 1;-An operating shaft for refrigerator car 9odoors and the like, sai'dfshaft comprising f two, separate,relativelymshort end-members and an intermediate connecting bartd'the;

ends of which said end-members are rigidlyattached, each of saidend-members 'having 85 a crank arm at its outer end.

2. 'An opera-ting shaft for refrigerator car doorsiindA .l-19d,"l'kW-slaid shaft comprising two, separate, like, relatively shortend-members, and an intermediate connectingbsr 10,0

rectangular in cross Section to the ends of intermediate its crank arinand -ts forked whieli .Suid end-lnembrs are rigidly atend. Cached., eachof Suid end-members having :i

l i s .ca'nk arm zit` its outer'end und forked :it lts a O CONNOR i'iner@iid where joined to the end of said `W1tnesse s: ficoanectuig bar, eachend member beihgalso EnMUNn Ancoox,

ovided with u rouded'beariug portion 17 vM. MUNmY.

